Supressors
That reminds me of one of my work colleagues, he had an old Husqvarna Rolling block in the Swedish 50 cal 12.7 x 44mm which is the Swedish equivalent of the 50-70. His son who is a gunsmith made a full length supressor for it. That rifle was a little awkward to use but was very quiet because he had also reduced his smokeless loads to just below the speed of sound with a 500 grain bullet. While not silent was still quiet enough to really confuse any other goats, pigs or deer the noise was probably the same as a car door being closed quietly.
That reminds me of one of my work colleagues, he had an old Husqvarna Rolling block in the Swedish 50 cal 12.7 x 44mm which is the Swedish equivalent of the 50-70. His son who is a gunsmith made a full length supressor for it. That rifle was a little awkward to use but was very quiet because he had also reduced his smokeless loads to just below the speed of sound with a 500 grain bullet. While not silent was still quiet enough to really confuse any other goats, pigs or deer the noise was probably the same as a car door being closed quietly.